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Tap water quality report

Joshua, TX

EPA monitoring detected 30 contaminants across the 2 water suppliers serving Joshua. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
65,583
people served
30
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Joshua's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
2440 µg/L 61%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate
1910 µg/L 19%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
811 µg/L 8.1%
of the EPA limit 10000 µg/L
 2/2 SYR4
Copper
320 µg/L 25%
of the EPA limit 1300 µg/L
 2/2 SYR4
TTHM
102 µg/L 127%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Chloroform
75.6 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
72.8 µg/L 121%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Lead
70.4 µg/L 469%
of the EPA limit, in the worst sample — 15 µg/L
 1/2 SYR4
Lithium
65.6 µg/L
No EPA limit set
 1/2 UCMR-5
Barium
64 µg/L 3.2%
of the EPA limit 2000 µg/L
 2/2 SYR4
Dibromochloromethane
33.4 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
32.2 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
28.6 µg/L
No EPA limit set
 2/2 SYR4
Cyanide
20.8 µg/L 10%
of the EPA limit 200 µg/L
 1/2 SYR4
Trichloroacetic Acid
20 µg/L
No EPA limit set
 1/2 SYR4
Dibromoacetic Acid
17.7 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
17.3 µg/L
No EPA limit set
 2/2 SYR4
Monobromoacetic Acid
8.2 µg/L
No EPA limit set
 1/2 SYR4
Monochloroacetic Acid
6.5 µg/L
No EPA limit set
 1/2 SYR4
Chromium
4.1 µg/L 4.1%
of the EPA limit 100 µg/L
 2/2 SYR4
Xylenes, Total
3.07 µg/L 0%
of the EPA limit 10000 µg/L
 1/2 SYR4
Arsenic
1.8 µg/L 18%
of the EPA limit 10 µg/L
 1/2 SYR4
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 2/2 SYR4
Di(2-ethylhexyl) Phthalate
1.08 µg/L 18%
of the EPA limit 6 µg/L
 1/2 SYR4
Di(2-ethylhexyl) Adipate
0.0422 µg/L 0%
of the EPA limit 400 µg/L
 1/2 SYR4
Pfba
0.0138 µg/L
No EPA limit set
 1/2 UCMR-5
Pfpea
0.0050 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhxa
0.0045 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0034 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0027 mg/L 18%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Joshua

SupplierPopulation served
JOHNSON COUNTY SUD 65,517
NORTH WHISPERING MEADOWS WATER 66

Frequently asked questions about Joshua tap water

Is Joshua tap water safe to drink?

EPA testing detected 30 contaminants in the water serving Joshua. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Joshua?

2 public water suppliers report drinking-water monitoring for Joshua, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Joshua's water?

The contaminants EPA monitoring detected in Joshua include Fluoride, Nitrate, Nitrate-Nitrite, Copper, TTHM. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.